US Patent  #8,097,993             Electric Motor or Generator with Mechanically Tunable Permanent Magnetic Field

US Patent  #8,390,162             Reconfigurable Inductive Synchronous Motor

US Patent  #8,072,108             Electric Motor or Generator with Mechanically Tunable Permanent Magnetic Field

US Patent  #8,288,908             Reconfigurable Inductive Synchronous Motor

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Several more pending